pub fn find_mutation_targets(tokens: &[Token]) -> HashSet<usize>Expand description
Span starts of tokens that a statement WRITES:
Set <x> to … / Set … at <k> to …-style targets take the identifier
nearest the write (the last one before to, or before at when a keyed
write follows), Increase/Decrease <x>, Push/Add/Append … to <x>,
Remove/Pop … from <x>.